Denatured alcohol containing a dibutyl ether



Patented Feb. 20, 1940 UNlED STATES PATENT OFFECE DENATURED ALCOHOL CONTAINING A DIBUTYL ETHER Louis J. Figg, Jr., and James W. Rhea, Kingsport, Tenn, assignors to Eastman Kodak Company, Rochester, N. Y., a corporation of New Jersey No Drawing. Application September 28, 1937, Serial No. 166,122

1 Claim. (Cl. 20277) This invention relates to the denaturing of Example II ethyl alcohol, and to alcohol so denatured. Per cent It is an object of our invention to provide a deby volume naturant which will render ethyl alcohol contain- Light acid and washed alcohol oils 4.00 5 ing it unfit for use as a beverage, which cannot Allyl alcohol 3.00 5 be economically removed from the alcohol by any Isopropyl alcjohol 4-.25 known methods, which will not render the alcohol Water 1 ,50 unfit for industrial uses in which denatured al- Methyl ethyl ketone 20.00 cohol has customarily been employed, and which Methyl amyl ether 33.62 will be free from methanol. Other objects will Di-butyl ether 33.63 10 hereinafter appear.

We have discovered that the dibutyl ethers are The light acid Oil nd W hed aICOhOI O l reeffective denaturants for alcohol. We may einferred in Example II e e ri d in U- S- ploy di-n-butyl ether, di-isob-utyl ether, or di-sec- Patent 1,975,091, of Louis J g,

ondary-butyl ether. In denaturing ethyl alcohol F .5 0 5 p s, r ven m r of ny of 15 with our novel denaturants', we may use from 0.5 the Combinations mentioned flv y b used to 5 parts of the dibutyl ether, or even more, per per 100 parts of 95% alcoho W Our ll y 100 parts of 95% alcohol. Th dibutyl th ethers are used in combination with acetal or may be used alone in denaturing, or they may dimethyl acetal, not more than 1 part of the debe used in conjunction with denaturing materials naturan combination p 00 p rts f 5% derived from the destructive distillation of hard- 001101 is necessary, although more y be u d wood, such as those which are described in U. S. if desired- Patents 1,975,090; 1,975,091, and 1,975,092. Wh n our n l ethers r u in njun When used in conjunction with these hardwood 151011 with ketones, D S e ormed with 5 denaturants, they decrease the coloration of the alcohol and water Which distil over in all fractions alcohol brought about by the hardwood dethroughout the entire boiling range of th denaturants. The decoloration takes place on t d alcoholstanding for several days, What we claim as our invention and desire to Likewise, our novel ether denaturants may be be secured by Letters Patent of the United States 0 used in conjunction with aliphatic ketones, or with a lower alkyl acetal, such as ac t l or 11- Industrial ethyl alcohol denatured with 0.5 to 5 methyl acetal, or with amino compounds, or ith parts of a dibutyl ether, as an essential denaturany other denaturants with which they may be element, P 0 parts of 95% ethyl 310 101- found to be compatible. For instance, we may use the following combinations of denaturants: LOUIS J. FIGG, JR. 35

Example I JAMES W. RHEA.

Per cent by volume Methyl ethyl ketrme 20 49 Methyl amyl ether Di-butyl ether 40 

